Vacuum cleaner having detachable dust separating unit

ABSTRACT

A vacuum cleaner having a detachable dust separating unit is disclosed. The vacuum cleaner includes a cleaner body having a first opening to open a portion of a first surface thereof and a second opening to open a portion of a second surface thereof, a dust separating unit to separate a dust from an air, and a seating part formed in the cleaner body to detachably mount the dust separating unit on the cleaner body. The dust separating unit forms a portion of an outward appearance of the cleaner body while closing up the first and the second openings of the cleaner body when the dust separating unit is mounted on the seating part.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit under 35 U.S.C. §119(a) of Korean Patent Application No. 10-2008-0135968, filed on Dec. 29, 2008, in the Korean Intellectual Property Office, the entire content of which is hereby incorporated by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present disclosure relates to a vacuum cleaner. More particularly, the present disclosure relates to a vacuum cleaner capable of detachably mounting a dust separating unit, which draws in an external air and separates a dust or dirt therefrom.

2. Description of the Related Art

In general, a cyclone dust-separating apparatus includes a cyclone unit vertically and elongately installed, a cyclone body with an air inflow part and an air discharging part formed at a side and a top thereof, respectively, and a dust collecting unit connected to a bottom part of the cyclone unit. Accordingly, an external air is drawn in through the side of the cyclone body and lowered while being swirled therein, and a dirt or dust removed from the air is lowered and collected in the collecting unit. However, in such a conventional cyclone dust-separating apparatus, there is a problem that since it has one single cyclone to separate the dust from the air only once, a dust separating efficiency is deteriorated.

To address the problem as described above, a multi cyclone dust-separating apparatus having a plurality of cyclones is actively being developed. Such a multi cyclone dust-separating apparatus is advantageous in that since it can separate the dust several times from the air using the plurality of cyclones, the dust separating efficiency is improved. However, in the multi cyclone dust-separating apparatus, there is a problem that since it has the plurality of cyclones, it increases in volume. Accordingly, when the multi cyclone dust-separating apparatus is installed in a cleaner body, only some parts, such as the dust collecting unit and the like, should be detachably installed in the cleaner body. Thus, in maintenance and repair, there is an inconvenience that after only some detachably installed parts, such as the dust collecting unit and the like, are removed from the vacuum cleaner, the fixedly installed remaining parts, such as the cyclones, should be maintained and repaired in a narrow space in the cleaner body.

SUMMARY OF THE INVENTION

An aspect of the present disclosure is to address at least the above problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the present disclosure is to provide a vacuum cleaner, which is capable of detachably mounting a large volume dust separating unit, such as a multi cyclone dust-separating apparatus, thereby allowing the dust separating unit to be easily maintained and repaired.

Another aspect of the present disclosure is to provide a vacuum cleaner, which is capable of detachably mounting a large volume dust separating unit, such as a multi cyclone dust-separating apparatus, while not greatly increasing the vacuum cleaner in size.

In accordance with an aspect of the present disclosure, a vacuum cleaner includes a cleaner body having a first opening to open a portion of a first surface thereof and a second opening to open a portion of a second surface thereof; a dust separating unit to separate a dust from an air; and a seating part formed in the cleaner body to detachably mount the dust separating unit on the cleaner body, wherein the dust separating unit forms a portion of an outward appearance of the cleaner body while closing up the first and the second openings of the cleaner body when the dust separating unit is mounted on the seating part.

Here, the seating part may be a recess with an accommodating space fluidly communicated with the first and the second openings of the cleaner body and formed in a shape corresponding to the dust separating unit. At this time, the accommodating space may be configured, so that it is inclined to ascend toward at least the second opening with respect to a horizontal plane.

The dust separating unit may be configured, so that when the dust separating unit is mounted on the seating part, a portion thereof is projected to the outside through the first and the second openings of the cleaner body.

The dust separating unit may include a first cyclone unit to draw in an air and to first centrifugally separate a dust from the air, and a second cyclone unit to second centrifugally separate a dust from the air discharged from the first cyclone unit. A portion of the first cyclone unit may be projected to the outside through the second opening of the cleaner body and a portion of the second cyclone unit may be projected to the outside through the first opening. At this time, the first and the second cyclone units may be detachably coupled to or with each other.

The first cyclone unit at a lower part thereof may draw in the air and at an upper part thereof may discharge the air.

The first cyclone unit may include a first cyclone chamber having an air inlet at a lower part thereof, a center pipe disposed in a center of the first cyclone chamber, to guide a rotation of an air drawn in through the air inlet, a first dust collecting chamber dispose around the first cyclone chamber, to store the dust centrifugally separated from the first cyclone chamber, and a second dust collecting chamber dispose at one side of the first dust collecting chamber, to store the dust centrifugally separated by the second cyclone unit. At this time, the first dust collecting chamber may be formed in a shape having a semicircular cross section, and the second dust collecting chamber may be formed in a shape having a rectangular cross section. In addition, the first dust collecting chamber may be configured so that at least a portion thereof closes up the second opening of the cleaner body when the dust separating unit is mounted on the seating part.

The first cyclone unit may further include a handle formed on the first dust collecting chamber. At this time the handle may be configured so that at least a portion thereof is projected to the outside through the second opening of the cleaner body.

The second cyclone unit may include at least two cyclones horizontally disposed parallel to each other above the first cyclone unit. At this time, each of the at least two cyclones may be configured so that at least a portion thereof is projected to the outside through the first opening of the cleaner body.

The second cyclone unit may further include a first cover to open and close up an upper part of the first cyclone unit, a grill member to filter a dust from the air discharged from the first cyclone unit, and a second cover to open and close up the first opening of the cleaner body.

At this time, the first cover may be configured to open and close up the first and the second dust collecting chambers of the first cyclone unit at the same time. In addition, the grill member may be configured, so that at least a portion thereof is projected into the first cyclone chamber of the first cyclone unit and maintained in a spaced-apart relation to a center pipe of the first cyclone unit. Also, the second cover may be configured to close up the first opening when the dust separating unit is mounted on the seating part.

BRIEF DESCRIPTION OF THE DRAWING FIGURES

The above and other objects, features, and advantages of certain exemplary embodiments of the present disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic perspective view exemplifying a vacuum cleaner to which a detachable dust separating unit according to an exemplary embodiment of the present disclosure is mounted;

FIG. 2 is a partial perspective view exemplifying an operation of separating the dust separating unit of FIG. 1 from a cleaner body;

FIG. 3 is an exploded perspective view of the dust separating unit of FIG. 2;

FIG. 4 is a cross-sectional view of the dust separating unit of FIG. 2;

FIG. 5 is a front elevation of the dust separating unit of FIG. 2

FIG. 6 is a top plan-perspective view exemplifying a first cyclone unit of the dust separating unit of FIG. 3; and

FIG. 7 is a partial sectional view exemplifying a modified example of a second cyclone unit of the dust separating unit of FIG. 4.

Throughout the drawings, the same reference numerals will be understood to refer to the same elements, features, and structures.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

Hereinafter, a vacuum cleaner having a detachable dust separating unit of according to certain exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawing figures.

FIGS. 1 and 2 schematically exemplify a vacuum cleaner 1 having a detachable dust separating unit 50 according to an exemplary embodiment of the present disclosure.

Referring to FIGS. 1 and 2, the vacuum cleaner 1 according to the exemplary embodiment of the present disclosure includes a cleaner body 10, an extended tube 20, a suction nozzle assembly 30, and the detachable dust separating unit 50.

The detachable dust separating unit 50 is detachably installed on a front part of the cleaner body 10, and a motor part (not illustrated) on which a suction motor (not illustrated) is mounted is installed in a rear part of the cleaner body 10.

The cleaner body 10 includes an outer casing 11 forming an outward appearance. As illustrated in FIG. 2, the outer casing 11 at a front part of an upper surface thereof has a first opening 11 a formed in an approximately semicircle shape corresponding to a second cover 69 (see FIG. 3) of a second cyclone unit 65 to be described later, and at a front surface adjacent to the front part of the upper surface thereof has a second opening 11 b formed in an approximately semicylinder shape.

A seating part 80, which detachably mounts the dust separating unit 50 in the cleaner body 10, includes a recess 81 formed in the outer casing 11 to communicate in fluid with the first and the second openings 11 a and 11 b. The recess 81 has an accommodating space 83 in the form of a semicylinder formed in a shape corresponding to the dust separating unit 50.

To easily mount the dust separating unit 50, the accommodating space 83 may be formed, so that a bottom surface and a rear surface thereof are upwardly or diagonally inclined in a predetermined angle of, for example, 5 to 20 degrees, toward the second opening 11 b with respect to a horizontal plane and a vertical plane, respectively. In addition, the accommodating space 83 may have a height and a front-and-rear width formed in such a size that when the dust separating unit 50 is mounted therein, a handle 62 of a first cyclone unit 55 and cyclones 71 a and 71 b disposed on the second cover 69 of the second cyclone unit 65, which will be described below, are projected to the outside through the second and the first openings 11 b and 11 a, respectively. Accordingly, a whole height and a whole front-and-rear width of the cleaner body 10 may be reduced by a width of the projected handle 62 of the first cyclone unit 55 and a height of the projected cyclones 71 a and 71 b. As a result, while mounting the dust separating unit 50 having the first and the second cyclone units 55 and 65, the cleaner body 10 may be reduced in entire size.

Also, a pair of side wheels 13 and bottom wheels (not illustrated) are disposed on both sides and a bottom surface of the cleaner body 10 to move the cleaner body 10 along a surface to be cleaned in cleaning.

An operating handle 21 is formed on an upper part of the extended tube 20, and a suction hose 15, which is connected with the cleaner body 10, is connected to a lower part of the operating handle 21. The suction nozzle assembly 30 is connected to a lower part of the extended tube 20 to draw in a dust or dirt along with an air from the surface to be cleaned.

FIGS. 3 through 5 exemplify the dust separating unit 50 according to the exemplary embodiment of the present disclosure.

As illustrated in FIGS. 3 through 5, the dust separating unit 50, as a multi cyclone dust-separating apparatus having a plurality of cyclones, includes a first cyclone unit 55 and a second cyclone unit 65.

The first cyclone unit 55, which draws in the air drawn in through the suction nozzle assembly 30, the extended tube 20 and the suction hose 15 from the surface to be cleaned and first centrifugally separates the dust from the air, is configured, so that it draws in the air at a lower part thereof and discharges the air at an upper part thereof. For this, the first cyclone unit 55 is provided with a first cyclone chamber 59 in the form of a cylinder having a first air inlet 56 formed on a side of the lower part thereof. The first air inlet 56 is coupled with an air drawing-in passage (not illustrated) formed in a lower side of the front part of the outer casing 11 to communicate in fluid with a connection socket 81 a coupled to the suction hose 15.

A center pipe 57 is disposed in a center of the first cyclone chamber 59 to guide a rotation of the air drawn in through the first air inlet 56. As illustrated in FIG. 6, a spiral guide 58 is formed on an outer circumferential surface of the center pipe 57 to guide the air to rotate along the center pipe 57.

A first dust collecting chamber 60 is disposed around the first cyclone chamber 59 to collect and store the dust centrifugally separated at the first cyclone chamber 59. The first dust collecting chamber 60 is formed in a tub shape with a semicircular cross section. The first dust collecting chamber 60 has a height higher than that of the first cyclone chamber 59, so that it can draw in the dust from the air whirling in the first cyclone chamber 59. In addition, the first dust collecting chamber 60 forms an outer appearance of the first cyclone unit 55, and is configured, so that a front surface thereof closes up the second opening 11 b when the dust separating unit 50 is mounted on the seating part 80, as illustrated in FIG. 1. The front surface of the first dust collecting chamber 60 may be formed of a transparent plastic material, so that a user can see, from the outside, whether it is filled with the dust.

A second dust collecting chamber 61 is disposed at the rear of the first dust collecting chamber 60 to collect and store the dust centrifugally separated by the second cyclone unit 65. The second dust collecting chamber 61 may be formed in a tub shape having a rectangular cross section, which is separated from the first dust collecting chamber 60 by a partition 61 a. In addition, the second dust collecting chamber 61 is located in the accommodating space 83 of the recess 81 positioned in the outer casing 11, so that it is not exposed to the outside when the dust separating unit 50 is mounted on the seating part 80. A rear surface of the second dust collecting chamber 61 may be formed of a transparent plastic material, so that the user can see, from the outside, whether it is filled with the dust.

To reduce the cleaner body 10 in size as described above, a whole front-and-rear width of the first and the second dust collecting chamber 60 and 61 constructed as described above is formed in a size corresponding to the front-and-rear width of the accommodating space 83 of the recess 81, that is, in such a size that when the dust separating unit 50 is mounted in the accommodating space 83 of the recess 81, the handle 62 of the first cyclone unit 55 is projected to the outside through the second opening 11 b (see FIG. 1).

The handle 62 is formed on a portion (that is, the front surface) opposite to a portion (that is, a rear surface) of the first dust collecting chamber 60 to which the second dust collecting chamber 61 is located. Because the whole front-and-rear width of the first and the second dust collecting chamber 60 and 61 is formed in the size corresponding to the front-and-rear width of the accommodating space 83 of the recess 81, the handle 62 is projected to the outside through the second opening 11 b of the outer casing 11.

The second cyclone unit 65, which second centrifugally separates a dust from the air discharged from the first cyclone unit 55, is detachably coupled with the first cyclone unit 55 above the first cyclone unit 55, as illustrated in FIG. 3. For this, the second cyclone unit 65 is provided with a first cover 66 to open and close up upper parts of the first and the second dust collecting chambers 60 and 61 of the first cyclone unit 55. As illustrated in FIG. 4, a groove part 66 a is formed on an undersurface of the first cover 66 to correspond to upper edges of the first and the second dust collecting chamber 60 and 61. The upper edges of the first and the second dust collecting chamber 60 and 61 are inserted into or separated from the groove part 66 a, and thus the first cover 66 can simultaneously close up or open the upper parts of the first and the second dust collecting chamber 60 and 61.

An air drawing-in pipe 67 is formed on a center of the undersurface of the first cover 66 to draw in the air discharged from the first cyclone chamber 59 after the dust is separated at the first cyclone chamber 59. A grill member 68 is formed on a lower part of the air drawing-in pipe 67, and has a plurality of air holes to filter a fine dust from the discharged air. In the exemplary embodiment, the grill member 68 is illustrated as being integrally formed with the air drawing-in pipe 67, but it can be separately formed from the air drawing-in pipe 67. The grill member 68 is projected into the first cyclone chamber 59, so that it is maintained in a spaced-apart relation to the center pipe 57.

A guide partition 66 b is formed in the first cover 66. The guide partition 66 b forms a guide passage 75 to branch off and guide the air drawn in into the air drawing-in pipe 67 through the grill member 68 into second air inlets 70 of the horizontally arranged cyclones 71 a and 71 b to be described later.

To reduce the cleaner body 10 in size as described above, a thickness of the first cover 66 having the guide passage 75 is formed in such a size that a whole height of which a height of the first cyclone unit 55 is added thereto conforms to the height of the accommodating space 83 of the recess 81, that is, in such a size that when the dust separating unit 50 is mounted in the accommodating space 83 of the recess 81, the cyclones 71 a and 71 b disposed on the second cover 69 are projected to the outside through the first opening 11 a.

The second cover 69 is disposed on the first cover 66. The second cover 69 is detachably coupled with an upper edge of the first cover 66 and an upper edge of the guide partition 66 b by a projected part 69 a formed on a lower part of the second cover 69. Alternatively, as in a second cyclone unit 65′ of a modified example illustrated in FIG. 7, the second cover 69 may be integrally formed with the first cover 66.

The second cover 69 is formed in a size and a shape (that is, a semicircular shape) corresponding to the first opening 11 a of the outer casing 11, so that when the dust separating unit 50 is mounted on or separated from the seating part 80, it can close up or open the first opening 11 a.

A plurality of, for example, two cyclones 71 a and 71 b are installed on the second cover 69 to second separate a dust from the air by using a centrifugal force. The two cyclones 71 a and 71 b are symmetrically arranged in parallel and adjacent to each other. Because the two cyclones 71 a and 71 b are formed in such a size that a height of which the height of the first cyclone unit 55 and the thickness of the first cover 66 are combined conforms to the height of the accommodating space 83 of the recess 81 as described above, they are projected to the outside through the first opening 11 a of the outer casing 11 when the dust separating unit 50 is mounted on the seating part 80. In addition, to allow the air drawn in through the guide passage 75 of the first cover 66 from the first cyclone unit 55 to flow and discharge in a horizontal state or direction by a whirling motion thereof, each of the cyclones 71 a and 71 b is arranged, so that a line of center axis thereof is positioned in a right angle to a line of center axis of the whirling current in the first cyclone chamber 59.

Each of the cyclones 71 a and 71 b includes a second air inlet 70, a second cyclone chamber 72, a guide pipe 73, a discharging pipe 77, and a dust charging part 74. Since each of the cyclones 71 a and 71 b has the same elements and functions, only one cyclone 71 a will be explained.

As illustrated in FIG. 5, the second air inlet 70 at a lower end thereof is coupled with the guide passage 75 and at an upper end thereof is coupled in a tangential shape to a front side (a left side in FIG. 4) of the second cyclone chamber 72. The second cyclone chamber 72, which provides a space to allow the air drawn in through the second air inlet 70 to whirl, may be formed in a cylinder shape. Alternatively, the second cyclone chamber 72 may be formed in a convex cylinder shape or a truncated cone shape. The second cyclone chamber 72 may be formed of a transparent plastic material.

To allow the air drawn in into the second cyclone chamber 72 to smoothly form a whirling current, the guide pipe 73 and the discharging pipe 77 are arranged in the front and the rear of the second cyclone chamber 72 to face to each other while having the same center axis.

As illustrated in FIG. 4, the discharging pipe 77 has a grill 77 a disposed on a front end thereof to filter a fine dust from the air discharged from the second cyclone chamber 72. According to the design, the grill 77 a may be omitted or removed, as in the second cyclone unit 65′ of the modified example illustrated in FIG. 7. The discharging pipe 77 at a rear end (a right side end in FIG. 4) thereof is penetrated through and slightly projected from the second cyclone chamber 72. Accordingly, when the dust separating unit 50 is mounted on the seating part 80, the rear end of the discharging pipe 77 is connected to an inlet of a discharging passage (not illustrated) formed in the seating part 80 to communicate in fluid with the suction motor. Thus, the air from which the dust is separated in the second cyclone chamber 72 of each of the cyclones 71 a and 71 b can be mixed or united into one in the discharging passage and discharged toward the suction motor.

The dust charging part 74 is arranged below a rear end of the second cyclone chamber 72 to send the fine dust centrifugally separated from the air to the second dust collecting chamber 61 of the first cyclone unit 55 through a dust discharging passage 76 of the first cover 66.

In the above description, although in the vacuum cleaner 1 according to the exemplary embodiment of the present disclosure, the dust separating unit 50 is illustrated and explained as being the multi cyclone dust separating apparatus including the second cyclone unit 22 with the two cyclones 71 a and 71 b, the present disclosure is not limited thereto. For instance, the dust separating unit 50 may be formed in a configuration including a second cyclone unit with a plurality of cyclones arranged in a radial direction above a first cyclone unit.

As explained above, the vacuum cleaner 1 according to the exemplary embodiment of the present disclosure is configured, so that the entire of the dust separating unit 50 having the plurality of cyclones, that is, the first and the second cyclone units 55 and 65 is detachably mounted to the cleaner body 10. Accordingly, in maintenance and repair, the user can separate the entire of the dust separating unit 50 from the cleaner body 10 and then move the dust separating unit 50 to an outer wide area to maintain and repair the dust separating unit 50 thereat.

In addition, the vacuum cleaner 1 according to the exemplary embodiment of the present disclosure is configured, so that the first and the second cyclone units 55 and 65 of the dust separating unit 50 are detachably coupled to or with each other. Accordingly, the first and/or the second cyclone units 55 and/or 65 can be easily maintained and repaired.

Also, the vacuum cleaner 1 according to the exemplary embodiment of the present disclosure is configured, so that some components of the dust separating unit 50, that is, the handle 62 of the first cyclone unit 55 and the cyclones 71 a and 71 b of the second cyclone unit 65 are arranged to project to the outside. Accordingly, there is no need for forming the seating part 80 of mounting the dust separating unit 50 to have a height and a width identical to or larger than the entire height and the entire width of the dust separating unit 50. Thus, the vacuum cleaner 1 according to the exemplary embodiment of the present disclosure can detachably mount the dust separating unit 50 with the plurality of cyclones for superior dust-separating performance while not greatly increasing the vacuum cleaner 10 in size.

Hereinafter, an operation of the vacuum cleaner 1 having the detachable dust separating unit 50 according to the exemplary embodiment of the present disclosure constructed as described above will be explained in detail with reference to FIGS. 1 through 6.

First, as the vacuum cleaner is supplied with an electric power, the suction motor is operated. As a result, an air is drawn in into the first air inlet 56 through the suction nozzle assembly 30, the extended tube 20 and the suction hose 15 along with a dust or dirt in the vicinity of a surface to be cleaned.

The air drawn in into the first air inlet 56 is changed into a whirling current while being guided by the spiral guide 58 of the center pipe 57, and is drawn into the first cyclone chamber 59. With a centrifugal action of the whirling current ascending by a suction force of the suction motor, a relatively large dust is separated from the air drawn in into the first cyclone chamber 59. The separated dust is moved toward and collected into the first dust collecting chamber 60.

The air from which the dust is first separated passes through the grill member 68 to filter off a fine dust therefrom again, and flows into the second air inlets 70 of the two cyclones 71 a and 71 b via the air drawing-in pipe 67 and the guide passage 75.

The air flowed into the second air inlets 70 is changed into a whirling current while being dashed against an inner circumferential surface of the second cyclone chamber 72 and guided by the guide pipe 73 and the discharging pipe 77. A dust is second separated from the air by the centrifugal force of the whirling current. The dust separated from the air in the second cyclone chamber 72 is collected into the second dust collecting chamber 61 through the dust discharging part 74 and the dust discharging passage 76.

The air from which the dust is second separated passes through the grill 77 a to filter off a fine dust therefrom again, and discharges into the discharging passage formed in the seating part 80 through the discharging pipe 77. The discharged air is united into one in the discharging passage and discharged to the outside through the suction motor.

After the cleaning operation is completed as described above, if the user wants to empty the first and the second dust collecting chamber 60 and 61, she or he carries out a dust removing operation as follows.

First, as illustrated in FIG. 2, the user grasps the handle 62 and draws out the entire of the dust separating unit 50 from the seating part 80. And then, as illustrated in FIG. 3, the user pulls the second cyclone unit 65 up while grasping the handle 62. As a result, the upper edges of the first and second dust collecting chambers 60 and 61 are separated from the groove part 66 a of the first cover 66 to open the upper parts of the first and second dust collecting chambers 60 and 61. In this state, the dust collected in the first and second dust collecting chambers 60 and 61 is removed from the first and second dust collecting chambers 60 and 61 and dumped on a dustbin, and the dust removing operation is completed.

After that, if the user wants to mount the dust separating unit 50 on the seating part 80 again, she or he carries out a mounting operation as follows.

First, the user places the second cyclone unit 65 on the first cyclone unit 55 and then inserts the upper edges of the first and second dust collecting chambers 60 and 61 into the groove part 66 a of the first cover 66 to couple the second cyclone unit 65 with the first cyclone unit 55. And then, the user grasps the handle 62 and pushes the dust separating unit 50 into the recess 81 of the seating part 80 to mount the dust separating unit 50 in the seating part 80. At this time, the second cover 69 closes up the first opening 11 a of the outer casing 11 and the front surface of the first dust collecting chamber 60 closes up the second opening 11 b of the outer casing 11. In addition, the first air inlet 56 is connected with the air drawing-in passage communicating in fluid with the connection socket 81 a coupled to the suction hose 15, and the rear ends of the discharging pipes 77 of the two cyclones 71 a and 71 b are coupled with inlets of the discharging passage. Also, the two cyclones 71 a and 71 b and the handle 62 are projected to the outside of the outer casing 11 through the first and the second openings 11 a and 11 b of the outer casing 11, respectively. As a result, the mounting operation is completed.

As apparent from the foregoing description, according to the exemplary embodiments of the present disclosure, the vacuum cleaner is configured, so that the entire of the large volume of dust separating unit, such as the multi cyclone dust separating apparatus, having the plurality of cyclones, that is, the first and the second cyclone units, is detachably mounted to the cleaner body. Accordingly, in maintenance and repair, the user can separate the entire of the dust separating unit from the cleaner body and then move the dust separating unit to the outer wide area to maintain and repair the dust separating unit thereat. Thus, the inconvenience in that after only some detachably installed parts, such as the dust collecting unit and the like, are removed from the vacuum cleaner, the fixedly installed rest, such as the cyclones, should be maintained and repaired in the narrow space in the cleaner body, as in the conventional vacuum cleaner, is prevented.

In addition, the vacuum cleaner according to the exemplary embodiment of the present disclosure is configured, so that the first and the second cyclone units of the dust separating unit are detachably coupled to or with each other. Accordingly, the first and/or the second cyclone units can be easily maintained and repaired.

Also, the vacuum cleaner according to the exemplary embodiment of the present disclosure is configured, so that some components of the large volume of dust separating unit, such as the multi cyclone dust separating apparatus, that is, at least the handle of the first cyclone unit and the cyclones of the second cyclone unit, are arranged to project to the outside. Accordingly, there is no need for forming the seating part of mounting the dust separating unit to have the height and the width identical to or larger than the entire height and the entire width of the dust separating unit. Thus, the vacuum cleaner according to the exemplary embodiment of the present disclosure can detachably mount the large volume of dust separating unit, but design the cleaner body to have about the same size as the dust separating unit having the single cyclone in the conventional vacuum cleaner. As a result, the vacuum cleaner according to the exemplary embodiment of the present disclosure can detachably mount the large volume of separating unit, such as the multi cyclone dust separating apparatus, for superior dust-separating performance while not greatly increasing the vacuum cleaner in size.

Although representative embodiments of the present disclosure have been shown and described in order to exemplify the principle of the present disclosure, the present disclosure is not limited to the specific embodiments. It will be understood that various modifications and changes can be made by one skilled in the art without departing from the spirit and scope of the disclosure as defined by the appended claims. Therefore, it shall be considered that such modifications, changes and equivalents thereof are all included within the scope of the present disclosure. 

1. A vacuum cleaner comprising: a cleaner body having a first opening to open a portion of a first surface thereof and a second opening to open a portion of a second surface thereof; a dust separating unit to separate a dust from an air; and a seating part formed in the cleaner body to detachably mount the dust separating unit on the cleaner body, wherein the dust separating unit forms a portion of an outward appearance of the cleaner body while closing up the first and the second openings of the cleaner body when the dust separating unit is mounted on the seating part.
 2. The cleaner as claimed in claim 1, wherein the seating part comprises a recess with an accommodating space fluidly communicated with the first and the second openings of the cleaner body and formed in a shape corresponding to the dust separating unit.
 3. The cleaner as claimed in claim 2, wherein the accommodating space is inclined to ascend toward at least the second opening with respect to a horizontal plane.
 4. The cleaner as claimed in claim 1, wherein the dust separating unit is configured, so that when the dust separating unit is mounted on the seating part, a portion thereof is projected to the outside through the first and the second openings of the cleaner body.
 5. The cleaner as claimed in claim 1, wherein the dust separating unit comprises a first cyclone unit to draw in an air and to first centrifugally separate a dust from the air, and a second cyclone unit to second centrifugally separate a dust from the air discharged from the first cyclone unit, and wherein the first cyclone unit comprises a portion that is projected to the outside through the second opening of the cleaner body and the second cyclone unit comprises a portion that is projected to the outside through the first opening.
 6. The cleaner as claimed in claim 5, wherein the first and the second cyclone units are detachably coupled to or with each other.
 7. The cleaner as claimed in claim 5, wherein the first cyclone unit draws in the air at a lower part thereof and discharges the air at an upper part thereof.
 8. The cleaner as claimed in claim 7, wherein the first cyclone unit comprises: a first cyclone chamber having an air inlet at the lower part thereof; a center pipe disposed in a center of the first cyclone chamber, to guide a rotation of the air drawn in through the air inlet; a first dust collecting chamber disposed around the first cyclone chamber, to store the dust centrifugally separated from the first cyclone chamber; and a second dust collecting chamber disposed at one side of the first dust collecting chamber, to store the dust centrifugally separated by the second cyclone unit.
 9. The cleaner as claimed in claim 8, wherein the first dust collecting chamber is formed in a shape having a semicircular cross section, and the second dust collecting chamber is formed in a shape having a rectangular cross section.
 10. The cleaner as claimed in claim 8, wherein the first dust collecting chamber is configured so that at least a portion thereof closes up the second opening of the cleaner body when the dust separating unit is mounted on the seating part.
 11. The cleaner as claimed in claim 8, wherein the first cyclone unit further comprises a handle formed on the first dust collecting chamber.
 12. The cleaner as claimed in claim 11, wherein the handle is configured so that at least a portion thereof is projected to the outside through the second opening of the cleaner body.
 13. The cleaner as claimed in claim 5, wherein the second cyclone unit comprises at least two cyclones horizontally disposed parallel to each other above the first cyclone unit.
 14. The cleaner as claimed in claim 13, wherein each of the at least two cyclones is configured so that at least a portion thereof is projected to the outside through the first opening of the cleaner body.
 15. The cleaner as claimed in claim 13, wherein the second cyclone unit further comprises a first cover to open and close up an upper part of the first cyclone unit.
 16. The cleaner as claimed in claim 15, wherein the first cover is configured to open and close up a first dust collecting chamber and a second dust collecting chamber of the first cyclone unit at the same time.
 17. The cleaner as claimed in claim 13, wherein the second cyclone unit further comprises a grill member to filter a dust from the air discharged from the first cyclone unit.
 18. The cleaner as claimed in claim 17, wherein the grill member is configured, so that at least a portion thereof is projected into the first cyclone chamber of the first cyclone unit and maintained in a spaced-apart relation to a center pipe of the first cyclone unit.
 19. The cleaner as claimed in claim 13, wherein the second cyclone unit further comprises a second cover to open and close up the first opening of the cleaner body.
 20. The cleaner as claimed in claim 19, wherein the second cover is configured to close up the first opening when the dust separating unit is mounted on the seating part. 